Thought I'd revive this thread - great place this!
When I went previously I saw:
Swift, Grey Heron, Canada Goose, Greylag Goose, Mute Swan, Mallard, Tufted Duck, Gadwall, Great Crested Grebe, Lapwing, Coot, Moorhen, Black Headed Gull, Ringed Plover, Wood Pigeon, Magpie, Blackbird, Reed...